CN112887320A - Ephemeris data processing method, device, equipment and storage medium - Google Patents
Ephemeris data processing method, device, equipment and storage medium Download PDFInfo
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Abstract
The disclosure provides a method, a device, equipment and a storage medium for processing ephemeris data, and relates to the fields of satellite communication, positioning, navigation and the like. The specific implementation scheme is as follows: the ephemeris data processing method comprises the following steps: receiving raw ephemeris data from a plurality of user equipments; and analyzing the original ephemeris data according to the analysis mode of each piece of user equipment and the satellite ephemeris protocol of each galaxy. According to the embodiment of the disclosure, the ephemeris data of a plurality of user equipments can be processed and stored in a centralized manner, and more complete ephemeris data can be stored, so that more abundant ephemeris data can be provided.
Description
Technical Field
The present disclosure relates to the field of computer technology, and more particularly, to the fields of satellite communications, positioning, navigation, and the like.
Background
The satellite ephemeris data includes radio signals transmitted by the positioning satellites describing orbital information for each satellite. The position of each satellite can be calculated according to the ephemeris data, so that the position calculation is further realized by applying a positioning algorithm. The ephemeris data mainly comprises broadcast ephemeris and precise ephemeris, and the broadcast ephemeris is generally acquired by a receiver along with a radio signal broadcast by a satellite, so that the real-time performance is strong. The satellite positions calculated by using the ephemeris are more accurate, but the ephemeris generally requires post-processing by a satellite tracking station and has poor real-time performance. At the mobile phone end, if ephemeris data cannot be acquired, positioning cannot be performed, and the speed of acquiring the ephemeris data also directly influences the speed of positioning.
Disclosure of Invention
The disclosure provides a processing method, a device, equipment and a storage medium for ephemeris data.
According to an aspect of the disclosure, a method for processing ephemeris data is provided, including:
receiving raw ephemeris data from a plurality of user equipments;
and analyzing the original ephemeris data according to the analysis mode of each piece of user equipment and the satellite ephemeris protocol of each galaxy.
According to another aspect of the present disclosure, there is provided a method for processing ephemeris data, including:
and sending the original ephemeris data of the user equipment to a server so as to analyze the original ephemeris data at the server according to the analysis mode of the user equipment and the satellite ephemeris protocol of each galaxy.
According to another aspect of the present disclosure, there is provided an apparatus for processing ephemeris data, including:
a receiving module, configured to receive raw ephemeris data from a plurality of user equipments;
and the analysis module is used for analyzing the original ephemeris data according to the analysis mode of each piece of user equipment and the satellite ephemeris protocol of each galaxy.
According to another aspect of the present disclosure, there is provided an apparatus for processing ephemeris data, including:
and the sending module is used for sending the original ephemeris data of the user equipment to a server so as to analyze the original ephemeris data at the server according to the analysis mode of the user equipment and the satellite ephemeris protocols of all the galaxy systems.
According to another aspect of the present disclosure, there is provided an electronic device including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method according to any one of the embodiments of the present disclosure.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer instructions for causing a computer to perform a method in any of the embodiments of the present disclosure.
According to another aspect of the present disclosure, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the method in any of the embodiments of the present disclosure.
According to the technology disclosed by the invention, the ephemeris data of a plurality of user equipment can be processed and stored in a centralized manner, more complete ephemeris data can be stored, and more abundant ephemeris data can be provided.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:
FIG. 1 is a flow chart illustrating a method for processing ephemeris data according to an embodiment of the disclosure.
Fig. 2a is a schematic diagram of an example of a navigation message.
FIG. 2b is a diagram illustrating an example of a format of a subframe in ephemeris data.
Figure 2c is a schematic illustration of an example of ephemeris data in plain text.
FIG. 3 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure.
FIG. 4 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure.
FIG. 5 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure.
FIG. 6 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure.
FIG. 7 is a diagram illustrating an example of an application of a method for processing ephemeris data according to another embodiment of the disclosure.
FIG. 8 is a block diagram of an apparatus for processing ephemeris data according to an embodiment of the disclosure.
FIG. 9 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure.
FIG. 10 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure.
FIG. 11 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure.
FIG. 12 shows a schematic block diagram of an example electronic device used to implement embodiments of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
FIG. 1 is a flow chart illustrating a method for processing ephemeris data according to an embodiment of the disclosure. The method can comprise the following steps:
s11, receiving raw ephemeris data from a plurality of user equipment;
and S12, analyzing the original ephemeris data according to the analysis mode of each user equipment and the satellite ephemeris protocol of each galaxy.
Illustratively, the method can be applied to a server side (also referred to as a server side or a server). The server may receive raw ephemeris data from a plurality of user devices. The user equipment can comprise various types of equipment such as a mobile phone, a tablet computer, a vehicle machine and the like. Illustratively, the user device may be in communication with a satellite and may be capable of receiving raw ephemeris data, e.g., in binary format. For example, the user device may have a positioning and/or navigation function, for example, a mapping Application (APP) may be installed in the user device of the android system, and the positioning and/or navigation function is provided in the map APP, and during the positioning and/or navigation process, the user device can communicate with a satellite and acquire the required ephemeris data.
The ephemeris data acquired by the single user equipment is possibly less, and the server can perform centralized processing and storage on the ephemeris data of the plurality of user equipments by adopting a crowdsourcing return mode, so that more complete ephemeris data can be stored, and more abundant ephemeris data can be provided. Further, when the user equipment needs to perform positioning, even if the user equipment cannot communicate with the satellite, the required ephemeris data can be obtained from the server, so that the positioning speed and the positioning accuracy are improved.
In another embodiment of the present disclosure, the method for processing ephemeris data may include the steps of the above embodiments. In one embodiment, the parsing scheme of each ue includes: interface definition of the operating system of each user equipment and a chip layer ephemeris message data protocol.
In one embodiment, S12 may include: and analyzing the original ephemeris data according to the interface definition of the operating system of each piece of user equipment, the chip layer ephemeris message data protocol and the satellite ephemeris protocol of each galaxy. By analyzing the original ephemeris data, the plain-text ephemeris data can be obtained, and the method is more easily applied to various scenes needing the plain-text ephemeris data.
In one embodiment, the operating system of the user equipment may be an Android (Android) system, and examples of interface definitions of the Android system may be: raw message data for each satellite is obtained from the getData () function in the gnssnavigationsessage (GNSS navigation information) class of the Android system. The message data is a binary byte (byte) array, and the data formats of different galaxy systems are different. In particular data formats such as GPS L1, Beidou D1 or Beidou D2 satellite signals, a subframe contains word segments that may be represented by 10 words of 30 bits (bit) in size. For example, for Galileo I/NAV satellite signals, a message consists of a 238-bit word.
In the disclosed embodiments, the GNSS is called a Global Navigation Satellite System (Global Navigation Satellite System), and may be generally referred to as various Satellite Navigation systems, including Global, regional, and enhanced. Such as the beidou Satellite Navigation System, the GPS (Global Positioning System), the Glonass (Glonass), the EGNOS (European geographic Navigation Overlay Service), the MSAS (Multi-Functional Satellite Augmentation System), the QZSS (Quasi-Zenith Satellite System), and the like. Examples of data obtained from interfaces of the Android system are as follows:
example 1:
16,257,1,-1,2,34,-64,89,60,30,-11,-22,-108,18,1,-38,-84,11,-73,-121,-83,62,-44,-11,-76,1,-80,-127,-72,6,-79,-21,83,2,102,-88,83,3,62,-4,-50,23,74,-97,-21
the above example is message data of a GPS satellite, the first data after comma separation is the satellite number (16), the second data is the type (257, representing GPS), and the remaining data is data after binary byte data output. The specific meaning can be obtained by further analysis.
Example 2:
18,769,1,1,13,110,65,-14,105,-21,116,-64,47,52,99,40
the above is the message data of a GLONASS satellite, the first two digits after the comma separation are the satellite number (18) and the type (769, indicating GLONASS), and the remaining data is the data after the binary byte data is output. The specific meaning can be obtained by further analysis.
In one embodiment, for binary message data, format-specific conversion can be performed for different chips and different satellite systems.
For example, referring to fig. 2a, in the full ephemeris of one GPS satellite, a Navigation Message (Navigation Message) may include multi-frame data. A frame may comprise 1500bits of data and a frame may be further split into 5 Sub-frames (Sub-frames), each of 300bits in length. The subframe may include TLW (Telemetry word), HOW (handover over word), data (data), and the like. Among them, the TLW may include a Preamble (Preamble), a reserved bit (reserved), and a parity bit (parity). HOW may include TOW (Time of week, in seconds), subframe identification (div.id), and parity (parity). The binary values from a start of a bit to an end of a bit within a subframe are converted to decimal values to obtain a specific ephemeris data. For example, the 10 th bit from a certain bit in the subframe _1 is the GPS satellite cycle number; the number of the GPS satellite is the 6 th bit from a certain bit to the subsequent bit in the subframe _ 4.
For another example, ephemeris data for a piece of Galileo satellites consists of a plurality of subframes, and the format and data definition are different. Fig. 2b shows an example of the format of one subframe in one piece of ephemeris data of a Galileo satellite. Assuming that 128 bits (bits) are included in the subframe, the first 6 bits can resolve the Ephemeris type, 6-16 bits can resolve the IOD (Issue of Data Ephemeris, Ephemeris Data age), 17-30 bits can resolve the toe (Ephemeris reference epoch), and the later 32 bits can resolve the M0 (mean anomaly calculated from the reference epoch). The subframe may further include a1/2 indicating the square root of the track length radius, a Reserved bit (Reserved), and the like.
In one embodiment, the plain-text ephemeris format of each constellation may be determined from the satellite ephemeris protocol of each constellation. See, for example, FIG. 2c for an example of ephemeris data in plain text. In the plain ephemeris data, before the end of the header belongs to the header file. The header file is provided with a description of the file type: GNSS NAV DATA, indicating that this is broadcast ephemeris data.Mixed: indicating that this is a mixture of multiple satellite systems. The header file is followed by plain ephemeris data for the particular GPS satellite. For example, of eight lines of data starting from G32, the first line includes information of a data type (G, representing GPS), a satellite number (32), a time stamp, and the like. The second row includes IODE (data Table data age), CrsAmplitude corrected by the sine harmonic of the orbit radius, Δ n (the difference between the average angular velocity of the satellite calculated from the ephemeris and the average angular velocity calculated from the given parameters), and the like. The values in FIG. 2c are not actually collected values, but are merely for illustrative purposes and are not meant to be limiting. In practical application, various original ephemeris data can be analyzed according to the interface definition of the operating system of the user equipment, the chip layer ephemeris message data protocol and the satellite ephemeris protocol of each galaxy, so that various plain-text ephemeris data can be obtained.
FIG. 3 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure. The method for processing ephemeris data of this embodiment may include the steps of the above embodiments. In one embodiment, the method further comprises:
s31, performing duplicate removal and time synchronization on the analyzed ephemeris data according to the time, the satellite system and the satellite number of the analyzed ephemeris data;
and S32, storing the de-duplicated and time-synchronized ephemeris data into a database.
For example, if the resolved ephemeris data includes a plurality of pieces of data including the time of the ephemeris data, the satellite constellation, and the repetition of the satellite number, one of the pieces may be kept in the database. The database may be set in the server or may be set independently of the server.
Illustratively, the time synchronization method may include: and replacing the ephemeris data stored in the database before by the latest ephemeris data every certain time interval. For example, according to the time of the ephemeris data, the ephemeris data stored last time in the database is replaced by the resolved ephemeris data at the current time. Therefore, the de-duplicated and time-newest ephemeris data can be stored in the database, and under the condition that the ephemeris data needs to be searched, the redundant data is less due to de-duplicated ephemeris data, so that the searching efficiency can be improved; and due to time synchronization, ephemeris data with the latest time can be found.
FIG. 4 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure. The method for processing ephemeris data of this embodiment may include the steps of the above embodiments. In one embodiment, the method further comprises:
s41, receiving an ephemeris data acquisition request from the target equipment;
and S45, sending the ephemeris data corresponding to the ephemeris data acquisition request to the target device.
By adopting a crowdsourcing return mode, the server can receive raw ephemeris data, such as raw ephemeris message data, returned by a plurality of user devices, such as mobile phone clients. The server analyzes the original ephemeris data and performs processing such as duplicate removal and time synchronization on the analyzed ephemeris data. Storing the de-duplicated and up-to-date data into a database, and maintaining an update synchronization mechanism of the data. In this way, the server may support the ephemeris data service of the user equipment. If the server receives an ephemeris data acquisition request of a certain user equipment, namely a target equipment, the server can search the database for ephemeris data corresponding to the ephemeris data acquisition request. For example, if the ephemeris data acquisition request includes a time period that requires a lookup, the ephemeris data within the time period may be looked up in the database. For another example, if the ephemeris data acquisition request includes a satellite constellation that needs to be searched, the database may be searched for ephemeris data that includes the satellite constellation. For another example, if the ephemeris data acquisition request includes a satellite number to be searched, the ephemeris data including the satellite number may be searched in the database.
The server can issue ephemeris data to the target device based on the ephemeris data acquisition request, accurately and timely provide ephemeris data service, provide data support for positioning, navigation and other functions, and improve positioning and navigation speed and precision.
In one embodiment, the ephemeris data corresponding to the ephemeris data acquisition request includes ephemeris data for a global constellation or ephemeris data for a specific constellation.
For example, if the ephemeris data acquisition request includes a specific satellite constellation (or simply a specific constellation), the database may be searched for ephemeris data that includes the specific constellation. Further, the server may return ephemeris data for a particular constellation to the target device. If the ephemeris data acquisition request does not include a particular galaxy, the database may be searched for ephemeris data for the galaxy. Further, the server may return ephemeris data for the full constellation to the target device. Therefore, various ephemeris data services can be accurately and timely provided, data support is flexibly provided for functions such as positioning and navigation, and the speed and the precision of the positioning and the navigation are improved.
In one embodiment, the method further comprises:
s42, authenticating the ephemeris data acquisition request;
s43, under the condition that the authentication is passed, analyzing the ephemeris data acquisition request and judging the validity;
and S44, under the condition that the analysis and the validity judgment are successful, searching the ephemeris data corresponding to the ephemeris data acquisition request in the database.
For example, in S41, after receiving the ephemeris data acquisition request from the target device, the server may perform authentication by using device information and/or user information and the like carried in the ephemeris data acquisition request to determine whether the ephemeris data acquisition request is from an authorized device and/or an authorized user. If the authentication is from the authorized device and/or the authorized user, the authentication can be determined to be passed. In case of passing the authentication, the ephemeris data acquisition request may be parsed to acquire the content required for the request, such as time, satellite constellation, satellite number, etc. Furthermore, the validity of the analyzed content can be judged. For example, it is determined whether the satellite constellation conforms to the constellation name rule, whether the satellite number conforms to the numbering rule, and so on. And under the condition that the authentication is not passed, the subsequent steps can be stopped, and the service for acquiring the ephemeris data fails. The server may return failure response information to the target device. The server may not return information, and the target device determines whether the service of obtaining ephemeris data is successful or failed according to whether the service is overtime.
After the ephemeris data acquisition request is successfully analyzed, validity judgment can be performed on the analyzed content, and after the validity judgment is successful, the server can search for ephemeris data corresponding to the ephemeris data acquisition request in the database. Then, the server may return the ephemeris data corresponding to the found ephemeris data acquisition request to the target device in S45. In this way, the security of the service of acquiring ephemeris data can be improved.
FIG. 5 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure. The method can comprise the following steps:
and S51, sending the raw ephemeris data of the user equipment to the server, and analyzing the raw ephemeris data at the server according to the analysis mode of the user equipment and the satellite ephemeris protocol of each galaxy.
Illustratively, the method may be applied to a user equipment (which may also be referred to as a client or a user side, etc.). The user equipment can comprise various types of equipment such as a mobile phone, a tablet computer, a vehicle machine and the like. Illustratively, the user device may be in communication with a satellite and may be capable of receiving raw ephemeris data, e.g., in binary format. Illustratively, the user device may have positioning and/or navigation functionality.
In a crowdsourcing backhaul manner, multiple user devices may send respective raw ephemeris data to a server. The server can perform centralized processing and storage on the raw ephemeris data, and can store more complete ephemeris data, thereby providing more abundant ephemeris data. For a specific way of processing the raw ephemeris data by the server, reference may be made to the above description of the embodiment applied to the server, which is not described herein again.
FIG. 6 is a flow chart illustrating a method for processing ephemeris data according to another embodiment of the disclosure. The method for processing ephemeris data of this embodiment may include the steps of the previous embodiment. In one embodiment, the method further comprises:
s61, sending an ephemeris data acquisition request to a server;
and S62, receiving the ephemeris data corresponding to the ephemeris data acquisition request from the server.
For example, the ephemeris data acquisition request may carry device information and/or user information, and the server may authenticate the ephemeris data acquisition request to determine whether the ephemeris data acquisition request is from an authorized device and/or an authorized user. After the server performs authentication, analysis, validity judgment and other processing on the ephemeris data acquisition request, the ephemeris data corresponding to the ephemeris data acquisition request can be searched in the database. For a specific search manner, reference may be made to the related description of the embodiment applied to the server, which is not described herein again. Then, the server may return the ephemeris data corresponding to the found ephemeris data acquisition request to the target device. In this way, the user equipment may receive the ephemeris data corresponding to the ephemeris data acquisition request returned by the server.
The user equipment can receive the ephemeris data issued by the server based on the ephemeris data acquisition request, accurately and timely acquire ephemeris data service, provide data support for positioning, navigation and other functions, and improve the positioning and navigation speed and precision. The user equipment reporting the ephemeris data to the server may be different from the user equipment requesting the server to issue the ephemeris data.
In one embodiment, the ephemeris data corresponding to the ephemeris data acquisition request includes ephemeris data for a global constellation or ephemeris data for a specific constellation.
For example, if the ephemeris data acquisition request includes a particular galaxy, the server may look up the database for ephemeris data that includes the particular galaxy. Further, the ue may receive ephemeris data of a specific constellation returned by the server. If the ephemeris data acquisition request does not include a particular galaxy, the database may be searched for ephemeris data for the galaxy. Furthermore, the ue may receive ephemeris data of the whole galaxy returned by the server. Therefore, various ephemeris data services can be accurately and timely acquired, data support can be flexibly provided for functions such as positioning and navigation, and the speed and the precision of the positioning and the navigation are improved.
In one application example, the operating system of a user device, such as a cell phone, may be the Android (Android) system. Some versions of android support the interfacing of the raw data related to satellite positioning of the handset's underlying layer to the application layer for use by developers. These raw data can be further converted into observations required for satellite positioning. For example: pseudoranges, carrier phases, signal-to-noise ratios, etc. for each satellite. After obtaining the data, developers can research and develop user equipment such as a mobile phone end positioning algorithm by themselves without depending on a chip layer positioning result, so that satellite positioning with higher precision is realized.
User equipment such as a mobile phone terminal self-research satellite positioning needs satellite ephemeris data besides an observation value thrown by the mobile phone. The satellite almanac may include radio signals transmitted by the positioning satellites that describe orbital information for each satellite. The ephemeris data is acquired, and the position of each satellite can be calculated, so that the position calculation is further realized by applying a positioning algorithm. The ephemeris data is mainly divided into broadcast ephemeris and ephemeris.
Illustratively, the method for acquiring the raw ephemeris data at the mobile phone end includes at least one of the following:
mode 1: the broadcast ephemeris is acquired through an open interface of the Android system, such as a gnssnavigationsessage (GNSS navigation information) interface.
Mode 2: the mobile phone obtains a precise ephemeris product of an organization such as an IGS (International GNSS Service) through a network. The precise ephemeris data is generally generated by performing post-processing such as summarizing and joint back calculation after ephemeris data is acquired by a plurality of ground satellite tracking stations.
Mode 3: the handset obtains raw ephemeris data through an AGNSS (Assisted-GNSS) service, which is another service provider.
Therefore, after the original ephemeris data is acquired in various manners, the ephemeris data of each satellite of the user equipment such as a plurality of mobile phones and the like can be uploaded to the server side for centralized processing, so that the time for collecting the ephemeris data of each satellite of each galaxy is reduced. Subsequently, the mobile phone can acquire the needed ephemeris data from the server side, so that the positioning speed is increased.
The ephemeris data processing method is a crowdsourcing ephemeris service method based on user equipment, and can achieve low cost, strong real-time performance, high stability and complete ephemeris data acquisition and issuing service. And the complete, timely and stable ephemeris data service is realized at low cost, and a quick positioning and self-grinding high-precision positioning algorithm can be further realized on the user equipment.
In one example, a handset supporting the throwing of the broadcast ephemeris through the gnssnavigationsessage interface may be utilized to send raw ephemeris data, such as ephemeris raw message data (which may be referred to as raw message, ephemeris message, etc.), to the server in real time. And the server performs the processing of original message resolving, ephemeris data summarization, time synchronization and the like, and finally realizes a service supporting ephemeris aggregation and transmission. The technology solves the problem of insufficient data of the traditional mode of only relying on a single machine to obtain the broadcast ephemeris in a crowdsourcing mode. The framework for real-time acquisition, aggregation and delivery of the technology also supports real-time ephemeris service with short delay, for example, delay of not more than 1 second, and is far faster than the precision ephemeris which is calculated after the fact.
The ephemeris data processing method of this embodiment may include: crowdsourcing return, full-galaxy ephemeris original message analysis, data storage and synchronization and data distribution.
(1) Crowdsourcing backhaul
Referring to fig. 7, ephemeris raw message information is acquired in real time through a specific interface, for example, a GnssNavigationMessage interface of the android system, by a user device 71, for example, a mobile phone terminal. The user equipment may also be referred to as a client, and the client may perform a preliminary data integrity and validity check, a preliminary aggregation, and the like on the raw ephemeris data. And after certain magnitude of legal data is obtained, uniformly transmitting the legal data back to the server side for further processing. For example, when the raw ephemeris data in a certain ue reaches a certain data amount threshold, the raw ephemeris data is uniformly transmitted back to the server for further processing. For another example, when the collection time of the original ephemeris data in a certain user equipment reaches a certain time length, the ephemeris data is uniformly transmitted back to the server for further processing.
(2) Full galaxy ephemeris raw message parsing
After acquiring the original messages (for example, binary messages) sent back by the plurality of mobile phone clients, the server 72 analyzes the original messages according to the interface definition of the Android system, the chip layer ephemeris message data protocol, and the satellite ephemeris protocols of all galaxy systems. And (4) the satellite is sent to a binary message on the mobile phone, and the binary message is analyzed into ephemeris data of a plaintext at the server side. The server may resolve different types of ephemeris such as GPS ephemeris, GLONASS ephemeris, Galileo (Galileo) ephemeris, Beidou (Beidou) ephemeris, QZSS ephemeris, etc.
(3) Data warehousing and synchronization
After each piece of return data is analyzed, the server side removes the duplicate of the ephemeris data and synchronizes the time according to the time of the data, the satellite system and the satellite number. In addition, the server may store the deduplicated and up-to-date data in a database, which may be referred to as an ephemeris database 73, and the server may maintain an update synchronization mechanism for the data. And data synchronization can be realized based on the ephemeris database, and data distribution is responded.
(4) Data distribution
When a client needs to accelerate positioning speed or perform high-precision satellite positioning solution, a request for pulling ephemeris data (or referred to as an ephemeris data acquisition request) may be initiated to a crowdsourced ephemeris data service of a server. After complete authentication, request analysis and legality judgment, the server side inquires data of the database, timely returns ephemeris data of a whole galaxy or a specific galaxy and supports the requirements of the client side.
By adopting the scheme, the user equipment can quickly and accurately obtain ephemeris data from the server side, and the self-research positioning algorithm is favorably realized; and after the full-galaxy ephemeris data issued by the service is possessed, the positioning speed and the positioning precision are greatly improved compared with the positioning result of the original chip. Under the scene that the satellite can not be connected or the satellite signal is not good, the accuracy of positioning and navigation can be ensured.
FIG. 8 is a block diagram of an apparatus for processing ephemeris data according to an embodiment of the disclosure. The apparatus may include:
a receiving module 81, configured to receive raw ephemeris data from a plurality of user equipments;
and the analysis module 82 is configured to analyze the raw ephemeris data according to an analysis manner of each piece of user equipment and a satellite ephemeris protocol of each galaxy.
For example, the apparatus may be applied to a server, and the implementation method of the specific functions of the modules of the apparatus may be referred to in the above description about the server or the server.
FIG. 9 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure. The ephemeris data processing apparatus of this embodiment may include the components of the above-described apparatus embodiments. In one embodiment, the parsing scheme of each ue includes: interface definition of the operating system of each user equipment and a chip layer ephemeris message data protocol.
In one embodiment, the apparatus further comprises:
the processing module 91 is configured to perform deduplication and time synchronization on the analyzed ephemeris data according to the time of the analyzed ephemeris data, a satellite galaxy and a satellite number;
a saving module 92, configured to save the de-duplicated and time-synchronized ephemeris data into a database.
In one embodiment, the receiving module 81 is further configured to receive an ephemeris data acquisition request from a target device;
the device also includes: a sending module 93, configured to send the ephemeris data corresponding to the ephemeris data obtaining request to the target device.
In one embodiment, the ephemeris data corresponding to the ephemeris data acquisition request includes ephemeris data for a global constellation or ephemeris data for a specific constellation.
In one embodiment, the apparatus further comprises:
an authentication module 94, configured to authenticate the ephemeris data acquisition request;
a determining module 95, configured to analyze and determine validity of the ephemeris data acquisition request when the authentication is passed;
the searching module 96 is configured to search, in the database, ephemeris data corresponding to the ephemeris data acquisition request when the analysis and the validity judgment are successful.
For example, the apparatus may be applied to a server, and the implementation method of the specific functions of the modules of the apparatus may be referred to in the above description about the server or the server.
FIG. 10 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure. The apparatus may include:
a sending module 101, configured to send raw ephemeris data of a user equipment to a server, so that the server analyzes the raw ephemeris data according to an analysis method of the user equipment and a satellite ephemeris protocol of each galaxy.
For example, the apparatus may be applied to a user equipment, and the implementation method of the specific functions of the modules of the apparatus may be referred to in the above embodiments for the relevant description of the user equipment or the client.
FIG. 11 is a block diagram of an apparatus for processing ephemeris data according to another embodiment of the disclosure. The ephemeris data processing apparatus of this embodiment may include the components of the above-described apparatus embodiments. In an embodiment, the sending module 101 is further configured to send an ephemeris data acquisition request to the server;
the device also includes: a receiving module 111, configured to receive the ephemeris data corresponding to the ephemeris data obtaining request from the server.
For example, the apparatus may be applied to a user equipment, and the implementation method of the specific functions of the modules of the apparatus may be referred to in the above embodiments for the relevant description of the user equipment or the client.
The functions of each unit, module or sub-module in each device in the embodiments of the present disclosure may refer to the corresponding description in the data processing method, and are not described herein again.
The present disclosure also provides an electronic device, a readable storage medium, and a computer program product according to embodiments of the present disclosure.
FIG. 12 shows a schematic block diagram of an example electronic device 120 that may be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
As shown in fig. 12, the electronic device 120 includes a computing unit 121 that can perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM)122 or a computer program loaded from a storage unit 128 into a Random Access Memory (RAM) 123. In the RAM 123, various programs and data necessary for the operation of the electronic device 120 can also be stored. The calculation unit 121, the ROM 122, and the RAM 123 are connected to each other via a bus 124. An input/output (I/O) interface 125 is also connected to bus 124.
A number of components in the electronic device 120 are connected to the I/O interface 125, including: an input unit 126 such as a keyboard, a mouse, and the like; an output unit 127 such as various types of displays, speakers, and the like; a storage unit 128 such as a magnetic disk, optical disk, or the like; and a communication unit 129 such as a network card, modem, wireless communication transceiver, or the like. The communication unit 129 allows the electronic device 120 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The computing unit 121 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of the computing unit 121 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various dedicated Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, and so forth. The calculation unit 121 performs the respective methods and processes described above, such as the processing method of ephemeris data. For example, in some embodiments, the method of processing ephemeris data may be implemented as a computer software program tangibly embodied in a machine-readable medium, such as storage unit 128. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 120 via the ROM 122 and/or the communication unit 129. When the computer program is loaded into RAM 123 and executed by computing unit 121, one or more steps of the ephemeris data processing method described above may be performed. Alternatively, in other embodiments, the calculation unit 121 may be configured to perform the processing method of the ephemeris data by any other suitable means (e.g. by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.
The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel or sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (19)
1. A method for processing ephemeris data comprises the following steps:
receiving raw ephemeris data from a plurality of user equipments;
and analyzing the original ephemeris data according to the analysis mode of each piece of user equipment and the satellite ephemeris protocol of each galaxy.
2. The method of claim 1, wherein the parsing of each UE comprises: interface definition of an operating system of each user equipment and a chip layer ephemeris message data protocol.
3. The method of claim 1, further comprising:
according to the time, the satellite system and the satellite number of the analyzed ephemeris data, carrying out duplicate removal and time synchronization on the analyzed ephemeris data;
the de-duplicated and time-synchronized ephemeris data is saved to a database.
4. The method according to any one of claims 1 to 3, further comprising:
receiving an ephemeris data acquisition request from target equipment;
and sending the ephemeris data corresponding to the ephemeris data acquisition request to the target equipment.
5. The method of claim 4, wherein the ephemeris data corresponding to the ephemeris data acquisition request comprises ephemeris data for a whole galaxy or ephemeris data for a specific galaxy.
6. The method of claim 4, further comprising:
authenticating the ephemeris data acquisition request;
under the condition that the authentication is passed, analyzing and judging the validity of the ephemeris data acquisition request;
and under the condition of successful analysis and validity judgment, searching ephemeris data corresponding to the ephemeris data acquisition request in a database.
7. A method for processing ephemeris data comprises the following steps:
and sending the original ephemeris data of the user equipment to a server so as to analyze the original ephemeris data at the server according to the analysis mode of the user equipment and the satellite ephemeris protocol of each galaxy.
8. The method of claim 7, further comprising:
sending an ephemeris data acquisition request to the server;
and receiving ephemeris data corresponding to the ephemeris data acquisition request from the server.
9. Apparatus for processing ephemeris data, comprising:
a receiving module, configured to receive raw ephemeris data from a plurality of user equipments;
and the analysis module is used for analyzing the original ephemeris data according to the analysis mode of each piece of user equipment and the satellite ephemeris protocol of each galaxy.
10. The apparatus of claim 9, wherein the parsing scheme of each ue comprises: interface definition of an operating system of each user equipment and a chip layer ephemeris message data protocol.
11. The apparatus of claim 9, further comprising:
the processing module is used for carrying out duplicate removal and time synchronization on the analyzed ephemeris data according to the time, the satellite system and the satellite number of the analyzed ephemeris data;
and the storage module is used for storing the de-duplicated and time-synchronized ephemeris data into a database.
12. The apparatus according to any one of claims 9 to 11, wherein the receiving module is further configured to receive an ephemeris data acquisition request from a target device;
the device further comprises: and the sending module is used for sending the ephemeris data corresponding to the ephemeris data acquisition request to the target equipment.
13. The apparatus of claim 12, wherein the ephemeris data corresponding to the ephemeris data acquisition request comprises ephemeris data for a whole galaxy or ephemeris data for a specific galaxy.
14. The apparatus of claim 12, further comprising:
the authentication module is used for authenticating the ephemeris data acquisition request;
the judging module is used for analyzing and judging the validity of the ephemeris data acquisition request under the condition that the authentication is passed;
and the searching module is used for searching the ephemeris data corresponding to the ephemeris data acquisition request in a database under the condition of successful analysis and validity judgment.
15. Apparatus for processing ephemeris data, comprising:
and the sending module is used for sending the original ephemeris data of the user equipment to a server so as to analyze the original ephemeris data at the server according to the analysis mode of the user equipment and the satellite ephemeris protocols of all the galaxy systems.
16. The apparatus of claim 15, wherein the sending module is further configured to send an ephemeris data acquisition request to the server;
the device further comprises: and the receiving module is used for receiving the ephemeris data corresponding to the ephemeris data acquisition request from the server.
17. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.
18. A non-transitory computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1-8.
19. A computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of claims 1-8.
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Application publication date: 20210601 |